Adding simple SVG provokes: ValueError: could not convert string to float: 'm'

[nova-03]

FPDF2 is a great project and I am very happy that fpdf2 was expanded with the SVG support early this year. Thank you for that!

While adding a simple SVG like this

pdf.image('search.svg', 165, 105, 40, 0)

Here is the content of search.svg:

<svg width="15" height="15" viewBox="0 0 1792 1792" xmlns="http://www.w3.org/2000/svg">
  <path fill="#555555" d="M1216 832q0-185-131.5-316.5t-316.5-131.5-316.5 131.5-131.5 316.5 131.5 316.5 316.5 131.5 316.5-131.5 131.5-316.5zm512 832q0 52-38 90t-90 38q-54 0-90-38l-343-342q-179 124-399 124-143 0-273.5-55.5t-225-150-150-225-55.5-273.5 55.5-273.5 150-225 225-150 273.5-55.5 273.5 55.5 225 150 150 225 55.5 273.5q0 220-124 399l343 343q37 37 37 90z"/>
</svg>

I get an ValueError: "could not convert string to float: 'm'"
which has been thrown in svg.py at line 690

I am using Python 3.9.2 with the latest version of the master fpdf2 branch (2.5.1)

Thanks in advance!

[Lucas-C]

Thank you for reporting this bug @nova-03!
And thanks for providing the SVG file.

I'll get a look at it soon.
Ping @torque for information

[Lucas-C]

The full stack trace:

Traceback (most recent call last):
  File "./issue_356.py", line 16, in <module>
    pdf.image('search.svg', 165, 105, 40, 0)
  File "/opt/fpdf2/fpdf/fpdf.py", line 251, in wrapper
    return fn(self, *args, **kwargs)
  File "/opt/fpdf2/fpdf/fpdf.py", line 2781, in image
    return self._vector_image(img, x, y, w, h, link, title, alt_text)
  File "/opt/fpdf2/fpdf/fpdf.py", line 2852, in _vector_image
    svg = SVGObject(img.getvalue())
  File "/opt/fpdf2/fpdf/svg.py", line 776, in __init__
    self.convert_graphics(svg_tree)
  File "/opt/fpdf2/fpdf/svg.py", line 826, in convert_graphics
    self.build_group(root_tag, base_group)
  File "/opt/fpdf2/fpdf/svg.py", line 1012, in build_group
    pdf_group.add_item(self.build_path(child))
  File "/opt/fpdf2/fpdf/svg.py", line 1034, in build_path
    svg_path_converter(pdf_path, svg_path)
  File "/opt/fpdf2/fpdf/svg.py", line 740, in svg_path_converter
    numbers, svg_path = _read_n_numbers(svg_path[read_idx:], read_count)
  File "/opt/fpdf2/fpdf/svg.py", line 690, in _read_n_numbers
    return tuple(float(num) for num in numbers), leftover.lstrip()
  File "/opt/fpdf2/fpdf/svg.py", line 690, in <genexpr>
    return tuple(float(num) for num in numbers), leftover.lstrip()
ValueError: could not convert string to float: 'm'

[Lucas-C]

Fixed!

[nova-03]

Great. Thanks!